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1
Java 2
. .
if, ?:, switch
for, while, do while
/
break, continue
return, System.exit(status)
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2
. .
{ }
{ int x = 2; }
System.out.println(x);
: Can not resolve symbol x !
. .
if
if()
;else
;
if(){ }
else{ }
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3
. .
if
if(x5) && (y5){
System.out.println(x is larger than 5);System.out.println(You
win !!!);
}else
System.out.println(You lost I am sorry.);
. .
?:
()?:
System.out.println( (x
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4
. .
switch
switch(x)
{case (1 x): ;case (2 x): {}default: ;
} if
else if
. .
for
for(x = ; ; x);
for(x = ; ; x){
;}
for(x1 = 1, x2 = 2, ...; ; x1, x2, ... )
for(;;) { }
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5
. .
for
for(i = 1; i
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6
. .
while
int x = 0;while (x
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7
. .
do while
int x = 0;do{System.out.println(x++);
} while (x
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8
. .
break
class LabelTest {
public static void main (String arguments[]) {
for (int j = 1; j
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9
. .
continue
{ continue; }
Label: { continue Label; }
,
. .
continue
class LabelTest {
public static void main (String arguments[]) {
for (int j = 1; j
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10
. .
:
return; main()
System.exit(0)
. .
class CopyArrayWhile {
public static void main (String arguments[]) {
int[] array1 = { 7, 4, 8, 1, 4, 1, 4 };
float[] array2 = new float[array1.length];
System.out.print("array1: [ ");
for (int i = 0; i < array1.length; i++) {
System.out.print(array1[i] + " ");
}System.out.println("]");
System.out.print("array2: [ ");
int count = 0;
while ( count < array1.length && array1[count] !=
1){
array2[count] = (float) array1[count];
System.out.print(array2[count++] + " ");
}
System.out.println("]");
}
}
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11
. .
(Basic.java)
. .
if, switch.
for, while, do...while
break
H continue
H return main() System.exit(0)
