马士兵J2SE-第九章-多线程机制-sleep、join、yield、线程优先级

sleep:

package com.zzk.test;

import java.util.*;

public class Test{
	public static void main(String[] args) {
		MyThread thread = new MyThread();
		thread.start();
		try {
			Thread.sleep(10000);//10秒结束
		}
		catch(InterruptedException e) {

		}
		thread.interrupt();
	}
}

class MyThread extends Thread {
	boolean flag=true;

	public void run() {
		while(flag) {
			System.out.println("==="+new  Date()+"===");
			try {
				sleep(1000);
			}catch(InterruptedException e) {
				return;
			}
		}
	}
}

输出:

===Fri Nov 18 11:07:18 CST 2011===
===Fri Nov 18 11:07:19 CST 2011===
===Fri Nov 18 11:07:20 CST 2011===
===Fri Nov 18 11:07:21 CST 2011===
===Fri Nov 18 11:07:22 CST 2011===
===Fri Nov 18 11:07:23 CST 2011===
===Fri Nov 18 11:07:24 CST 2011===
===Fri Nov 18 11:07:25 CST 2011===
===Fri Nov 18 11:07:26 CST 2011===
===Fri Nov 18 11:07:27 CST 2011===

 

join:

package com.zzk.test;

public class Test {
	public static void main(String[] args) {
		MyThread2 t1=new MyThread2("zzk");
		t1.start();
		try {
			t1.join();
		} catch (InterruptedException e) {
		}
		for(int i=1;i<=10;i++) {
			System.out.println("i am main thread");
		}
	}
}

class MyThread2 extends Thread {
	MyThread2(String s) {
		super(s);
	}

	public void run() {
		for(int i=1;i<=10;i++) {
			System.out.println("I am "+getName());
			try {
				sleep(1000);
			}catch(InterruptedException e) {
				return;
			}
		}
	}
}

输出:

I am zzk
I am zzk
I am zzk
I am zzk
I am zzk
I am zzk
I am zzk
I am zzk
I am zzk
I am zzk
i am main thread
i am main thread
i am main thread
i am main thread
i am main thread
i am main thread
i am main thread
i am main thread
i am main thread
i am main thread

 

 

package com.zzk.test;

public class Test {
	public static void main(String[] args) {
		MyThread3 t1=new MyThread3("t1");
		MyThread3 t2=new MyThread3("t2");
	    t1.start();
	    t2.start();
	}
}

class MyThread3 extends Thread {
	MyThread3(String s){super(s);}

	public void run() {
		for(int i=1;i<=100;i++) {
			System.out.println(getName()+": "+i);
			if(i%10==0) {
		    	yield();
		}
	}
}
}

T1,T2每到10就换下一个

输出:

t1: 1
t1: 2
t1: 3
t1: 4
t2: 1
t1: 5
t2: 2
t1: 6
t2: 3
t1: 7
t1: 8
t2: 4
t1: 9
t2: 5
t1: 10
t2: 6
t1: 11
t2: 7
t1: 12
t2: 8
t1: 13
t2: 9
t1: 14
t2: 10
t1: 15
t2: 11
t1: 16
t2: 12
t1: 17
t2: 13
t1: 18
t2: 14
t1: 19
t2: 15
t1: 20
t2: 16
t1: 21
t2: 17
t1: 22
t2: 18
t1: 23
t2: 19
t1: 24
t2: 20
t1: 25
t2: 21
t1: 26
t2: 22
t1: 27
t2: 23
t1: 28
t2: 24
t1: 29
t2: 25
t1: 30
t2: 26
t1: 31
t2: 27
t1: 32
t2: 28
t1: 33
t2: 29
t1: 34
t2: 30
t1: 35
t2: 31
t1: 36
t2: 32
t1: 37
t2: 33
t1: 38
t2: 34
t1: 39
t2: 35
t1: 40
t2: 36
t1: 41
t2: 37
t1: 42
t2: 38
t1: 43
t2: 39
t1: 44
t2: 40
t1: 45
t2: 41
t1: 46
t2: 42
t1: 47
t2: 43
t1: 48
t2: 44
t1: 49
t2: 45
t1: 50
t2: 46
t2: 47
t2: 48
t2: 49
t1: 51
t2: 50
t1: 52
t2: 51
t1: 53
t2: 52
t1: 54
t2: 53
t1: 55
t2: 54
t1: 56
t2: 55
t1: 57
t2: 56
t1: 58
t2: 57
t1: 59
t2: 58
t1: 60
t2: 59
t1: 61
t2: 60
t1: 62
t2: 61
t1: 63
t2: 62
t1: 64
t2: 63
t1: 65
t2: 64
t1: 66
t2: 65
t1: 67
t2: 66
t1: 68
t2: 67
t1: 69
t2: 68
t1: 70
t2: 69
t1: 71
t2: 70
t2: 71
t2: 72
t2: 73
t2: 74
t2: 75
t2: 76
t1: 72
t2: 77
t1: 73
t2: 78
t1: 74
t2: 79
t1: 75
t2: 80
t1: 76
t2: 81
t1: 77
t2: 82
t1: 78
t2: 83
t1: 79
t2: 84
t1: 80
t2: 85
t1: 81
t2: 86
t1: 82
t2: 87
t1: 83
t2: 88
t1: 84
t2: 89
t1: 85
t2: 90
t1: 86
t2: 91
t1: 87
t2: 92
t1: 88
t2: 93
t1: 89
t2: 94
t1: 90
t2: 95
t1: 91
t2: 96
t1: 92
t2: 97
t1: 93
t2: 98
t1: 94
t2: 99
t1: 95
t2: 100
t1: 96
t1: 97
t1: 98
t1: 99
t1: 100

 

package com.zzk.test;

public class Test {
	public static void main(String[] args) {
		Thread t1=new Thread(new T1());
		Thread t2=new Thread(new T2());
		t1.setPriority(Thread.NORM_PRIORITY+3);
	    t1.start();
	    t2.start();
	}
}

class T1 implements Runnable {
	public void run() {
		for(int i=0;i<1000;i++) {
			System.out.println("T1: "+i);
		}
	}
}

class T2 implements Runnable {
	public void run() {
		for(int i=0;i<1000;i++) {
			System.out.println("------T2: "+i);
		}
	}
}

 

不加t1.setPriority(Thread.NORM_PRIORITY+3);则一样T1T2交替进行,加完以后T1获得的时间片会多很多
输出:

T1: 0
------T2: 0
T1: 1
------T2: 1
T1: 2
------T2: 2
T1: 3
------T2: 3
T1: 4
------T2: 4
T1: 5
------T2: 5
T1: 6
------T2: 6
T1: 7
------T2: 7
T1: 8
T1: 9
T1: 10
T1: 11
T1: 12
T1: 13
T1: 14
T1: 15
------T2: 8
T1: 16
T1: 17
T1: 18
T1: 19
T1: 20
T1: 21
T1: 22
------T2: 9
T1: 23
T1: 24
T1: 25
------T2: 10
T1: 26
------T2: 11
T1: 27
------T2: 12
T1: 28
------T2: 13
T1: 29
------T2: 14
T1: 30
------T2: 15
T1: 31
------T2: 16
T1: 32
T1: 33
------T2: 17
T1: 34
------T2: 18
T1: 35
------T2: 19
T1: 36
------T2: 20
T1: 37
------T2: 21
T1: 38
------T2: 22
T1: 39
------T2: 23
T1: 40
------T2: 24
------T2: 25
------T2: 26
------T2: 27
------T2: 28
------T2: 29
------T2: 30
------T2: 31
------T2: 32
------T2: 33
------T2: 34
------T2: 35
------T2: 36
------T2: 37
------T2: 38
------T2: 39
------T2: 40
------T2: 41
------T2: 42
------T2: 43
------T2: 44
------T2: 45
------T2: 46
------T2: 47
------T2: 48
------T2: 49
------T2: 50
------T2: 51
------T2: 52
------T2: 53
------T2: 54
------T2: 55
T1: 41
------T2: 56
T1: 42
------T2: 57
T1: 43
------T2: 58
T1: 44
------T2: 59
T1: 45
------T2: 60
T1: 46
------T2: 61
T1: 47
------T2: 62
T1: 48
------T2: 63
T1: 49
------T2: 64
T1: 50
------T2: 65
T1: 51
------T2: 66
T1: 52
------T2: 67
T1: 53
------T2: 68
T1: 54
------T2: 69
T1: 55
------T2: 70
T1: 56
------T2: 71
T1: 57
------T2: 72
T1: 58
------T2: 73
T1: 59
------T2: 74
T1: 60
------T2: 75
T1: 61
------T2: 76
T1: 62
------T2: 77
T1: 63
------T2: 78
T1: 64
------T2: 79
T1: 65
------T2: 80
T1: 66
------T2: 81
T1: 67
------T2: 82
T1: 68
------T2: 83
T1: 69
------T2: 84
T1: 70
------T2: 85
T1: 71
------T2: 86
T1: 72
------T2: 87
T1: 73
------T2: 88
T1: 74
------T2: 89
T1: 75
------T2: 90
T1: 76
------T2: 91
T1: 77
------T2: 92
T1: 78
------T2: 93
T1: 79
------T2: 94
T1: 80
------T2: 95
T1: 81
------T2: 96
T1: 82
------T2: 97
T1: 83
T1: 84
T1: 85
T1: 86
T1: 87
T1: 88
T1: 89
T1: 90
T1: 91
T1: 92
T1: 93
T1: 94
T1: 95
T1: 96
T1: 97
T1: 98
T1: 99
T1: 100
T1: 101
T1: 102
------T2: 98
T1: 103
------T2: 99
T1: 104
------T2: 100
------T2: 101
------T2: 102
------T2: 103
------T2: 104
------T2: 105
------T2: 106
------T2: 107
------T2: 108
------T2: 109
------T2: 110
------T2: 111
------T2: 112
------T2: 113
------T2: 114
------T2: 115
T1: 105
------T2: 116
T1: 106
------T2: 117
T1: 107
------T2: 118
T1: 108
------T2: 119
T1: 109
T1: 110
T1: 111
T1: 112
T1: 113
T1: 114
T1: 115
T1: 116
------T2: 120
------T2: 121
------T2: 122
T1: 117
------T2: 123
T1: 118
------T2: 124
T1: 119
------T2: 125
T1: 120
------T2: 126
T1: 121
------T2: 127
T1: 122
------T2: 128
T1: 123
------T2: 129
T1: 124
------T2: 130
T1: 125
------T2: 131
T1: 126
------T2: 132
T1: 127
------T2: 133
T1: 128
T1: 129
T1: 130
------T2: 134
T1: 131
------T2: 135
T1: 132
------T2: 136
T1: 133
------T2: 137
T1: 134
------T2: 138
T1: 135
------T2: 139
T1: 136
------T2: 140
T1: 137
------T2: 141
T1: 138
------T2: 142
T1: 139
------T2: 143
T1: 140
------T2: 144
T1: 141
------T2: 145
T1: 142
------T2: 146
T1: 143
------T2: 147
T1: 144
T1: 145
------T2: 148
T1: 146
------T2: 149
T1: 147
------T2: 150
T1: 148
------T2: 151
T1: 149
------T2: 152
T1: 150
------T2: 153
T1: 151
------T2: 154
T1: 152
------T2: 155
T1: 153
------T2: 156
T1: 154
------T2: 157
T1: 155
------T2: 158
T1: 156
------T2: 159
T1: 157
------T2: 160
T1: 158
------T2: 161
T1: 159
------T2: 162
T1: 160
------T2: 163
T1: 161
------T2: 164
T1: 162
------T2: 165
T1: 163
------T2: 166
T1: 164
------T2: 167
T1: 165
------T2: 168
T1: 166
------T2: 169
T1: 167
------T2: 170
T1: 168
------T2: 171
T1: 169
------T2: 172
T1: 170
------T2: 173
T1: 171
------T2: 174
T1: 172
------T2: 175
T1: 173
------T2: 176
T1: 174
------T2: 177
T1: 175
------T2: 178
T1: 176
------T2: 179
T1: 177
------T2: 180
T1: 178
------T2: 181
T1: 179
------T2: 182
T1: 180
------T2: 183
T1: 181
------T2: 184
T1: 182
------T2: 185
T1: 183
------T2: 186
T1: 184
------T2: 187
T1: 185
------T2: 188
T1: 186
------T2: 189
T1: 187
------T2: 190
T1: 188
------T2: 191
T1: 189
------T2: 192
T1: 190
------T2: 193
T1: 191
------T2: 194
T1: 192
------T2: 195
T1: 193
T1: 194
------T2: 196
T1: 195
------T2: 197
T1: 196
------T2: 198
T1: 197
------T2: 199
T1: 198
------T2: 200
T1: 199
------T2: 201
T1: 200
------T2: 202
T1: 201
------T2: 203
T1: 202
------T2: 204
T1: 203
------T2: 205
T1: 204
------T2: 206
T1: 205
------T2: 207
T1: 206
------T2: 208
T1: 207
------T2: 209
T1: 208
------T2: 210
T1: 209
------T2: 211
T1: 210
------T2: 212
T1: 211
------T2: 213
T1: 212
------T2: 214
T1: 213
------T2: 215
T1: 214
------T2: 216
T1: 215
------T2: 217
T1: 216
------T2: 218
T1: 217
------T2: 219
T1: 218
------T2: 220
T1: 219
------T2: 221
T1: 220
------T2: 222
T1: 221
------T2: 223
T1: 222
------T2: 224
T1: 223
------T2: 225
T1: 224
------T2: 226
T1: 225
------T2: 227
T1: 226
------T2: 228
T1: 227
------T2: 229
T1: 228
------T2: 230
T1: 229
------T2: 231
T1: 230
------T2: 232
T1: 231
------T2: 233
T1: 232
------T2: 234
T1: 233
------T2: 235
T1: 234
------T2: 236
T1: 235
------T2: 237
T1: 236
------T2: 238
T1: 237
T1: 238
------T2: 239
T1: 239
------T2: 240
T1: 240
------T2: 241
T1: 241
------T2: 242
T1: 242
------T2: 243
T1: 243
------T2: 244
T1: 244
------T2: 245
T1: 245
------T2: 246
T1: 246
------T2: 247
T1: 247
------T2: 248
------T2: 249
T1: 248
T1: 249
T1: 250
T1: 251
T1: 252
T1: 253
T1: 254
------T2: 250
T1: 255
T1: 256
T1: 257
T1: 258
T1: 259
T1: 260
T1: 261
T1: 262
------T2: 251
T1: 263
------T2: 252
T1: 264
------T2: 253
T1: 265
------T2: 254
T1: 266
------T2: 255
T1: 267
------T2: 256
T1: 268
T1: 269
T1: 270
T1: 271
T1: 272
T1: 273
------T2: 257
T1: 274
------T2: 258
T1: 275
------T2: 259
T1: 276
------T2: 260
T1: 277
------T2: 261
T1: 278
------T2: 262
T1: 279
------T2: 263
T1: 280
------T2: 264
T1: 281
------T2: 265
T1: 282
------T2: 266
T1: 283
------T2: 267
T1: 284
------T2: 268
T1: 285
------T2: 269
T1: 286
------T2: 270
T1: 287
------T2: 271
T1: 288
------T2: 272
T1: 289
------T2: 273
T1: 290
------T2: 274
T1: 291
------T2: 275
T1: 292
T1: 293
T1: 294
T1: 295
T1: 296
T1: 297
T1: 298
------T2: 276
T1: 299
------T2: 277
T1: 300
------T2: 278
T1: 301
------T2: 279
T1: 302
------T2: 280
T1: 303
------T2: 281
T1: 304
------T2: 282
T1: 305
------T2: 283
T1: 306
------T2: 284
T1: 307
------T2: 285
T1: 308
------T2: 286
T1: 309
------T2: 287
T1: 310
------T2: 288
T1: 311
------T2: 289
T1: 312
------T2: 290
T1: 313
------T2: 291
T1: 314
------T2: 292
T1: 315
------T2: 293
T1: 316
T1: 317
T1: 318
------T2: 294
T1: 319
------T2: 295
T1: 320
------T2: 296
T1: 321
------T2: 297
T1: 322
------T2: 298
T1: 323
------T2: 299
T1: 324
------T2: 300
T1: 325
------T2: 301
T1: 326
------T2: 302
T1: 327
------T2: 303
T1: 328
------T2: 304
T1: 329
------T2: 305
T1: 330
------T2: 306
T1: 331
------T2: 307
T1: 332
------T2: 308
T1: 333
------T2: 309
T1: 334
------T2: 310
T1: 335
------T2: 311
T1: 336
------T2: 312
T1: 337
------T2: 313
T1: 338
------T2: 314
T1: 339
------T2: 315
T1: 340
------T2: 316
T1: 341
------T2: 317
T1: 342
------T2: 318
T1: 343
------T2: 319
T1: 344
------T2: 320
T1: 345
------T2: 321
T1: 346
------T2: 322
T1: 347
------T2: 323
T1: 348
------T2: 324
T1: 349
------T2: 325
T1: 350
------T2: 326
T1: 351
T1: 352
T1: 353
------T2: 327
T1: 354
------T2: 328
T1: 355
------T2: 329
T1: 356
------T2: 330
T1: 357
------T2: 331
T1: 358
------T2: 332
T1: 359
T1: 360
T1: 361
T1: 362
T1: 363
T1: 364
T1: 365
T1: 366
------T2: 333
T1: 367
T1: 368
T1: 369
T1: 370
T1: 371
------T2: 334
T1: 372
------T2: 335
T1: 373
------T2: 336
T1: 374
------T2: 337
T1: 375
------T2: 338
T1: 376
------T2: 339
T1: 377
------T2: 340
T1: 378
------T2: 341
T1: 379
------T2: 342
T1: 380
------T2: 343
T1: 381
------T2: 344
T1: 382
------T2: 345
T1: 383
------T2: 346
T1: 384
------T2: 347
T1: 385
------T2: 348
T1: 386
T1: 387
T1: 388
T1: 389
------T2: 349
T1: 390
------T2: 350
T1: 391
------T2: 351
T1: 392
------T2: 352
T1: 393
------T2: 353
T1: 394
------T2: 354
T1: 395
------T2: 355
T1: 396
------T2: 356
T1: 397
------T2: 357
T1: 398
------T2: 358
T1: 399
------T2: 359
T1: 400
------T2: 360
T1: 401
------T2: 361
T1: 402
------T2: 362
T1: 403
T1: 404
------T2: 363
T1: 405
------T2: 364
T1: 406
------T2: 365
T1: 407
------T2: 366
T1: 408
------T2: 367
T1: 409
------T2: 368
T1: 410
------T2: 369
T1: 411
------T2: 370
T1: 412
------T2: 371
T1: 413
------T2: 372
T1: 414
------T2: 373
------T2: 374
T1: 415
------T2: 375
T1: 416
------T2: 376
T1: 417
------T2: 377
T1: 418
------T2: 378
T1: 419
------T2: 379
T1: 420
------T2: 380
T1: 421
------T2: 381
T1: 422
------T2: 382
T1: 423
------T2: 383
T1: 424
------T2: 384
------T2: 385
T1: 425
------T2: 386
T1: 426
------T2: 387
T1: 427
------T2: 388
T1: 428
------T2: 389
T1: 429
------T2: 390
T1: 430
------T2: 391
T1: 431
------T2: 392
T1: 432
------T2: 393
------T2: 394
------T2: 395
------T2: 396
------T2: 397
------T2: 398
------T2: 399
------T2: 400
------T2: 401
------T2: 402
------T2: 403
------T2: 404
------T2: 405
------T2: 406
------T2: 407
------T2: 408
------T2: 409
------T2: 410
------T2: 411
------T2: 412
------T2: 413
------T2: 414
------T2: 415
------T2: 416
------T2: 417
------T2: 418
------T2: 419
------T2: 420
------T2: 421
------T2: 422
------T2: 423
------T2: 424
------T2: 425
------T2: 426
------T2: 427
T1: 433
T1: 434
T1: 435
T1: 436
T1: 437
T1: 438
T1: 439
T1: 440
T1: 441
T1: 442
T1: 443
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------T2: 461
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T1: 999
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------T2: 996
------T2: 997
------T2: 998
------T2: 999

 

 

 

时间: 2024-12-23 22:21:10

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  package com.zzk.test; //同样一个线程类可以起两个线程 public class Test { public static void main(String[] args) { Runner r=new Runner(); Thread t1=new Thread(r); Thread t2=new Thread(r); t1.start(); t2.start(); } } class Runner implements Runnable { public void

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/* 范例名称:Frame 应用举例 * 源文件名称:TestFrame.java * 要 点:Frame组件的创建及显示设置 */ import java.awt.*; public class TestFrame { public static void main( String args[]) { Frame f = new Frame("My First Test"); f.setLocation(300, 300); f.setSize( 170,100); f.setBac

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自加和自减运算符 (++/--) 在前时先运算再取值,在后时先取值再运算 public class test { public static void main(String[] args){ int i1 = 10, i2 = 20; int i =(i2++); System.out.println("i = "+i); System.out.println("i2 = "+i2); i=(++i2); System.out.println("i =

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