java - how to use value of one switch case in another switch case: value is Scanner inputs? -

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i have 2 nested switches , wanted use value of 1 switch case in switch case. in below example, wanted use double variable temp_usr , pass argument method (cels()) in switch case, how can this?

switch( switch1){ case 1:  { system.out.println(" have selected celsius"); scanner temp_ip= new scanner(system.in); system.out.println("please enter temperature in celsius"); double temp_usr= temp_ip.nextdouble(); }    break; case 2: ............... case 3: ...............  switch(switch2) { case 1:  { system.out.println("convert celsius"); system.out.println(cels(arg));  /*this argument should take value of temp_usr*/ } break; case 2: .........   case 3: .........

the variable visible inside block defined. if want open visibility declare outside switch. try this:

double temp_usr= 0.0; //declaring here switch make visible in following code switch( switch1){ case 1:  { system.out.println(" have selected celsius"); scanner temp_ip= new scanner(system.in); system.out.println("please enter temperature in celsius"); temp_usr= temp_ip.nextdouble(); }    break; case 2: ............... case 3: ...............  switch(switch2) { case 1:  { system.out.println("convert celsius"); system.out.println(cels(arg));  /*this argument should take value of temp_usr*/ } break; case 2: .........   case 3: .........

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