JAVA 循环结构
在JAVA循环结构之中,如果想要同样的操作执行多次,就需要使用循环结构来使用,而JAVA中主要有三种循环结构分别为while\do\for
while
代码
实例
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| public class Demo {
public static void main (String args[]) {
int i = 0;
while (i < 10) {
i++;
System.out.println("value =" + i);
}
}
}
|
输出结果为:
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| value =1
value =2
value =3
value =4
value =5
value =6
value =7
value =8
value =9
value =10
|
while… do
do……while语句是如果不满足条件，则不嫩进入循环状态,有时候不满足条件的时候,也将最少执行一次
实例
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| public class Demo {
public static void main (String args[]) {
int i = 1;
do {
i++;
System.out.println("value = " + i);
} while(i < 10);
}
}
|
for
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| for (int i = 10; x < 10; i = i+1) {
}
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实例
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| public class Demo {
public static void main (String args[]) {
for(int i = 1;i < 10;i++) {
System.out.println("value = " + i);
}
}
}
|
for…if
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| public class Demo {
public static void main (String args[]) {
int [] i= {10,30,40,50};
for(int x:i) {
if (x==50) {
break;
}
System.out.print(x);
System.out.print("\n");
}
}
}
|
