How to use label in java?

goto label in java
java label break
java goto line
labels in java geeksforgeeks
label in java definition
label is missing in java
label in java applet
outer in java

I need to help. I want to use label in java. Like label in c, but goto can't use in java. How move to label in java? Program :

ulang:
switch (menu){
case 1 : input(); goto ulang;
break;
}

How to change code to java code ?


simply use looping if you want to make a repetition

do{
   /* code to display your menu here */
   switch(pilih){
      case 1 : input();break;
      case 2 : ..../*continue with your other selection*/
   }

}while(pilih!=5) // assume 5 is the exit choice

Labeled Statements in Java, Java labeled blocks are logically similar to to goto statements in C/C++. A label is They can use labels which are valid java identifiers with a colon. Labeled  Click the Launch button to run the Label Demo using Java™ Web Start (download JDK 7 or later). Alternatively, to compile and run the example yourself, consult the example index . Resize the window so you can see how the labels' contents are placed within the labels' drawing area.


There is no goto in Java. I suggest to use loops.

while (true) {
  switch (menu){
    case 1 : input(); continue;
    break;
  }
  break;
}

Bellow does not work in Java as I expected, it makes a labeled switch statement and break + label breaks a switch, does not go to a label (thanks @xiaofeng.li and @YatiSawhney):

ulang:
switch (menu) {
  case 1 : input(); break ulang;
}

Read the SO article Is there a goto statement in Java?

How to use labels in java code?, Java does not have a goto statement. A label marks the statement that follows it. You can use it to break out of that statement, and only out of that statement. Control of flow will always transfer to the end of the labeled statement. This example shows how to jump to a particular label when break or continue statements occour in a loop. String substring = "substring"; boolean found = false; int max = strSearch.length () - substring.length (); testlbl: for (int i = 0; i <= max; i++) { int length = substring.length (); int j = i; int k = 0;


Java doesn't support goto. Although you can use the labelled break and continue in nested loops and switch statements, they are just there to tell the compiler which block of code you are referring to, not actually jumping to that location. For example, you can write:

ulang:
switch(menu) {
case 1: input(); break ulang; // break the switch labelled by 'ulang'
}

But it's just the same as

switch(menu) {
case 1: input(); break;
}

Java continue statement, it to break out of that statement, and only out of that statement. Control of flow will always transfer to the end of the labeled statement. Java does not have a goto statement. A label marks the statement that follows it. You can use it to break out of that statement, and only out of that statement. Control of flow will always transfer to the end of the labeled statement.


I won't recommend using labels(goto). (Just for the sake of knowledge)The following is the snippet that will let you understand the same. Break with a label will get you out of the outer loop which has got the label.

label: for( initialization ; condition ; modification ){

    for( initialization ; condition ; modification ){
        if(condition){
            break label;
        }
    }

}

What is a Label?, to skip the current iteration of the outer loop too. Java does not have a general goto statement. The statements break and continue in Java alter the normal control flow of compound statements. They can use labels which are valid java identifiers with a colon. Labeled blocks can only be used with break and continue statements. They must be called within its scope.


How to Use Labels (The Java™ Tutorials > Creating a GUI With JFC , identifier followed by a colon. e.g. outer:, inner:, inner123:, inner_: etc. A Label object is a component for placing text in a container. A label displays a single line of read-only text. A label displays a single line of read-only text. The text can be changed by the application, but a user cannot edit it directly.


Understanding the Java Labeled Statement, of how this may be used. 6. Label is also an MS-DOS and Windows command line instruction used to change the identity of a hard or floppy disk drive. NOTE: by default, the label’s background is transparent, so if you want to set background, you have to set the label’s opaque property to true. Instead of using the methods above, we can use HTML code to customize the label’s appearance.


Java break statement, label, If the component is interactive and has a certain state, use a button instead of a label. By specifying HTML code in a label's text, you can give the label various  By default labels are vertically centered but the user can change the alignment of label. Constructor of the class are : JLabel() : creates a blank label with no text or image in it. JLabel(String s) : creates a new label with the string specified. JLabel(Icon i) : creates a new label with a image on it.